IEC 60730-2-15 Revised
IEC 60730-2-15:1994/AMD1:1997
Amendment 1 - Automatic electrical controls for household and similar use - Part 2: Particular requirements for automatic electrical water level sensing controls of the float or electrode-sensor type used in boiler applications
CHF 10.-
A more recent version of this publication exists: IEC 60730-2-15:2017